こんな方法もある、ということで…
Sheet1!H2: =TRIM(IF(C2="○",TEXT(C$1,"m/dd"),"")&" "&IF(D2="○",TEXT(D$1,"m/dd"),"")&" "&IF(E2="○",TEXT(E$1,"m/dd"),"")&" "&IF(F2="○",TEXT(F$1,"m/dd"),""))
Sheet2!B2: =IF(ISERROR(MATCH($A2,Sheet1!$A2:$A8,0)),"",INDEX(Sheet1!B2:B8,MATCH($A2,Sheet1!$A2:$A8,0)))
Sheet2!C2: =IF(ISERROR(MATCH($A2,Sheet1!$A2:$A8,0)),"",INDEX(Sheet1!H2:H8,MATCH($A2,Sheet1!$A2:$A8,0)))
お礼
ご回答ありがとうございました! 色々な方法があり、勉強になります。